Send grid events

If any raster grid features are selected then a OpenSpirit grid event An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface. may be sent.

From the map view, if there are such features selected you may send a grid event An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface. by clicking on this button.

This will send a grid event An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface. containing the grid values. Before the grid event An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface. is sent you will be prompted to select a unit that describes the grid z values if the Always prompt for Z unit option is enabled.

The grid event An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface. will either be sent in the raster features CRS A Coordinate Reference System, or re-sampled and sent in the map display CRS A Coordinate Reference System.  This choice is made in the OpenSpirit options dialog:

This options dialog is displayed by using this toolbar button:

If any grid is sent in a CRS A Coordinate Reference System with a datum other than WGS84 the OpenSpirit ArcGIS Extension will tag the grid CRS A Coordinate Reference System with a preferred transform to WGS84.  The data is NOT transformed to WGS84 but this transform is included in the OpenSpirit event A message sent between OpenSpirit enabled applications. Events may be shared between applications running on different computers and operating systems. for the convenience of receiving applications that have asked OpenSpirit to deliver the spatial event A message sent between OpenSpirit enabled applications. Events may be shared between applications running on different computers and operating systems. in its project CRS A Coordinate Reference System (which may have a different datum).  The OpenSpirit ArcGIS Extension will attempt to get the preferred transform by reading the transforms defined in the ArcMap project (as defined earlier by the user of the project). If no appropriate transform is found the user is prompted to select a transform from a list based on the EPSG database used by the OpenSpirit coordinate service (the details of the EPSG parameters may be shown in order to help guide this selection)  :

  Any selected transforms are then added to the ArcMap project so the user does not need to repeat the same choice again.

 It is not necessary for the receiving application to be running on the same PC as ArcGIS. It could be running on another PC or on a Linux workstation. It must, however, be run under the same account as the ArcGIS user (or an account registered as an OpenSpirit  secondary desktop for the ArcGIS user).  The receiving application must also be enabled for listening for grid events An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface..  

A grid only has rectangular cells when used in the CRS A Coordinate Reference System in which it was originally calculated.  Most G&G applications expect horizon grids to be rectangular and will either not accept or will  mishandle grids that are not comprised of  equal sized rectangular cells. For example, if in ArcGIS you are displaying a DEM (Digital Elevation Model)  that is a rectangular grid in a geographic CRS A Coordinate Reference System (e.g. WGS84) and you send an OpenSpirit grid event An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface. (in the layer CRS A Coordinate Reference System) most receiving applications (that work in a projected CRS A Coordinate Reference System) would not be able to handle the nonlinear distortions in the grid.  ArcGIS  has the capability , however, to resample and reproject grids on the fly. So a ArcGIS user could set the map display CRS A Coordinate Reference System in ArcGIS to equal that of the receiving application CRS A Coordinate Reference System and then choose to send the grid event An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface. in the map CRS A Coordinate Reference System. In this case ArcGIS would resample and reproject the grid into the display CRS A Coordinate Reference System and then the OpenSpirit grid event An OpenSpirit event that contains a grid of values normally representing the time or depth of a geologic surface. A receiving application will display the received surface. would use this CRS A Coordinate Reference System and the receiving application would receive a grid that was a regular rectangular grid in its projected CRS A Coordinate Reference System.